A new find from NASA's Kepler orbiting observatory is the first Earth-sized planet to be detected in the habitable zone of a star.
A new find from NASA's Kepler orbiting observatory is the first Earth-sized planet to be detected in the habitable zone of a star
Collapse of a subterranean ice lake created chaotic terrain, a new study suggests
Researchers running six NASA planetary science missions are competing for funds to keep their spacecraft alive.
Congress grills NASA head over security, cuts to missions, and reaching the International Space Station
Suspicions that Saturn's icy moon Enceladus harbors an internal ocean—one that could host life—have hardened into near certainty with exquisitely precise observations from the Cassini spacecraft.
As evidence mounts for cosmic inflation, theorists must confront a bedeviling conceptual problem in the theory.
Researchers spar over the meaning of findings and the precise timing of doomsday clock
Curiosity rover team members are now reasonably confident that contaminants brought from Earth cannot entirely explain certain carbon compounds Curiosity spotted in martian rock.
Icy orb far from the sun is the first nonplanet known to sport halos
Object is 83 times farther from the sun than we are
After years of searching, researchers recover tiny bits of the stuff that forms planets and people
Medium-sized observatory is struggling to find new role in the era of giant telescopes
Signs of gravitational waves shaking the newborn universe bolster the mind-boggling theory of cosmic inflation and electrify scientists the world over.
Observation could help assess the risk faced by future space missions
Moderate solar events could combine to make catastrophic space weather
Distant world surpasses its rival, Eris, in new analysis
Afterglow of the big bang bears signatures of gravitational waves, confirming incredible expansion of primordial universe
Mercury has contracted much more than scientists thought
European neutron source, Africa's super telescope, and exoplanet mission receive a total of £300 million
White House wants to mothball airborne telescope in money-saving move
Molecules called dimers hint that extraterrestrial worlds contain water
Clues come from rapidly spinning black hole 6.1 billion light-years away
Findings support case for midweight dark matter particles called sterile neutrinos
Many planets in a star's "habitable zone" may have hellish conditions
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